Method and system for determining mobile unit location by aggregation of tagged signals from a distributed antenna system
First Claim
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1. A method for determining the location of a mobile unit within a region, the method comprising:
- a) receiving at a plurality of antennas having known locations within said region a corresponding plurality of uplink signals originating from the mobile unit;
b) encoding each of said uplink signals with an antenna tag corresponding to each of said plurality of antennas;
c) combining the encoded uplink signals into a single combined signal;
d) selecting one or more signal parts of said combined signal;
e) decoding said signal parts to determine which of said antenna tags corresponds to each of said signal parts; and
f) determining said location in part from said known locations of said plurality of antennas, said signal parts, and said decoding.
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Abstract
A method for determining the location of a mobile unit tags uplink signals received at separate antennas with corresponding antenna tags. All of the uplink signals are combined into a single combined signal, which may be transmitted to a base station. One or more signal parts are selected from the combined signal, and these selected parts are decoded to determine their corresponding antenna tags. A location algorithm is applied to the decoded signal parts to determine a location of the mobile unit.
66 Citations
32 Claims
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1. A method for determining the location of a mobile unit within a region, the method comprising:
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a) receiving at a plurality of antennas having known locations within said region a corresponding plurality of uplink signals originating from the mobile unit;
b) encoding each of said uplink signals with an antenna tag corresponding to each of said plurality of antennas;
c) combining the encoded uplink signals into a single combined signal;
d) selecting one or more signal parts of said combined signal;
e) decoding said signal parts to determine which of said antenna tags corresponds to each of said signal parts; and
f) determining said location in part from said known locations of said plurality of antennas, said signal parts, and said decoding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A wireless communication system capable of providing location information for a mobile unit within a region, the system comprising:
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a) a plurality of antennas having known locations within said region for receiving a plurality of uplink signals transmitted from the mobile unit;
b) a plurality of encoding circuit blocks coupled to the plurality of antennas, wherein the encoding circuit blocks impose antenna tags on the uplink signals;
c) a combining circuit block connected to the encoding circuit blocks to receive said encoded uplink signals and output a single combined signal;
d) a processor in communication with the combining circuit block for receiving said combined signal, selecting one or more signal parts of said combined signal, and decoding said signal parts to determine which of said antenna tags corresponds to each of said signal parts; and
e) a location processor connected to the processor to receive said signal parts, wherein the location processor determines said location information in part from said known antenna locations, said signal parts, and said decoding using a location algorithm. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification